- add segmentationExists check to getSopClassHandlerModule
- now firing SEGMENTATION_REMOVED and SEGMENTATION_REPRESENTATION_REMOVED events
- centralized segmentation removal in a listener
- when a segmentation is deleted (completely), remove it from all viewports it overlays
- when a segmentation is removed from a viewport, remove it as overlay from the viewport
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Co-authored-by: Joe Boccanfuso <joe.boccanfuso@radicalimaging.com>
Co-authored-by: Bill Wallace <wayfarer3130@gmail.com>